Add callbacks for send channel rtp statistics

BUG=2235
R=mflodman@webrtc.org, pbos@webrtc.org, stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/4449004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5227 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc b/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
index 00e3412..7ff1412 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
@@ -1667,6 +1667,16 @@
   return rtt_ms_;
 }
 
+void ModuleRtpRtcpImpl::RegisterSendChannelRtpStatisticsCallback(
+    StreamDataCountersCallback* callback) {
+  rtp_sender_.RegisterRtpStatisticsCallback(callback);
+}
+
+StreamDataCountersCallback*
+    ModuleRtpRtcpImpl::GetSendChannelRtpStatisticsCallback() const {
+  return rtp_sender_.GetRtpStatisticsCallback();
+}
+
 void ModuleRtpRtcpImpl::RegisterSendFrameCountObserver(
     FrameCountObserver* observer) {
   rtp_sender_.RegisterFrameCountObserver(observer);